Re: AM/FM chassis forensics

"Engineer" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> Hello, all...
> Not antique (apologies to radio+phono NG) but I'm looking at a naked,
> unknown AM/FM tube chassis, circa 1960's.  It has no brand name and is
> a AC/DC unit (series heaters, live chassis.)  I'm trying to figure out
> if it is worth restoring, breaking up for parts or just dumping (the
> latter is tempting!)

Sounds like a typical Hitachi or Panasonic chassis of that era. Missing tube
is likely a 12AT6, or 12AU6/12BA6, depending on where it is in circuit.
Identifying marks that could be useful would be on those IF cans or output
transformers. If it's a Panasonic chassis, there will be a three pointed
star made of diamond shapes. If it's Hitachi, it will be a circle with lines
through it. This would also be seen on any original tubes.